JPWO2007091680A1 - Snow melting structure and snow melting device for roof and fence - Google Patents

Abstract

It can be melted in a soft state before it is compacted and slid down from the roof or fence. An object of the present invention is to provide a snow melting structure of a roof or a kite that can be removed and has excellent snow removal performance. A snow melting structure of a roof or fence provided with heat pipes arranged on the roof or fence, wherein the heat pipe 2 includes a header pipe 3 to which a heat source pipe 5 is attached or penetrated, and a plurality of branches from the header pipe 3 The heat pipe branch pipe 4 has a configuration in which the heat pipe branch pipe 4 is arranged substantially orthogonal to the roof 21 and the gradient direction of the eaves.

Description

  The present invention relates to a snow melting structure and a snow melting device for a roof or a fence that melts and removes snow accumulated on a fence such as a roof or a persimmon.

It is well known that a large amount of snow in a cold region has a great impact on social life. For example, snow on the roof can cause the house to collapse, so it is necessary to remove snow when the amount of snow exceeds a certain level. There is. Snow removal is a task that depends on human power for the most part, is forced to take a lot of time and labor, and is a dangerous task.
In addition, some houses have a large roof slope so that the tight snow can fall naturally by its own weight so that it is not necessary to remove the snow. However, for people and cars traveling on the road, a lump of snow that falls from the roof vigorously becomes a dangerous substance that not only hinders walking and running but also causes injury.
In order to solve such problems, there has been proposed a snow melting device that melts and removes snow on the roof without performing snow removal.
As a conventional technique, (Patent Document 1) states that “an appropriate interval is provided on a roof surface and brackets are projected, and a roof surface plate and a gap are provided on these brackets to support and fix a heating element including a heat pipe. , A snow melting device for roofs in which these heating elements are disposed along the roof slope on the eaves side portion of the roof is disclosed.
(Patent Document 2) states that “a heat pipe group dispersed and installed on a roof surface, a steam header pipe that communicates with each other to form an evaporation section, and a heat medium piped in the steam header pipe There is disclosed a “heat pipe type snow melting device comprising a supply heat medium circulation pipe, a heat medium heating means and a heat medium feed means interposed in the heat medium circulation pipe”.
(Patent Document 3) discloses a “hot water melting apparatus for roofs in which a hot water pipe is provided on the back surface of the roof material and the hot water is circulated to melt snow on the roof”.
Japanese Examined Patent Publication No. 2-48711 Japanese Utility Model Publication No. 3-50867 Japanese Utility Model Publication No. 6-43166

However, the above conventional techniques have the following problems.
(1) In the technology disclosed in (Patent Document 1), since the heating element (3) composed of a heat pipe is fixed to the eave side of the roof, the snow formed on the eave side portion by the snow accumulated on the roof Of the bank, a snow cave (10) is formed in which only the snow around the heating element melts and penetrates the eaves. For this reason, since the snowmelt water which accumulates on the part of the bank can be made to flow down to the bottom of the eave through the snow cave (10), it is possible to prevent water leakage called “sugamori” caused by the reverse flow of the snowmelt water to the building side. However, the snow around the snow cave (10) cannot be melted because it becomes a so-called “kamakura” snow chamber, and when heavy snow falls, more snow accumulates on the bank and the amount of snow accumulation increases. It was hardened and eventually had the problem of having to snow.
(2) In the technique disclosed in (Patent Document 2), the surrounding snow is melted by the heat pipe (3) disposed along the roof slope to form a snow cave, and the snow melt flows through the snow cave. Therefore, the snow on the roof surface away from the heat pipe (3) and the steam header (4) cannot be melted, and if heavy snow falls, the snow accumulates and the amount of snow increases, eventually it must be removed. I had a problem that I had to.
(3) Since the technique disclosed in (Patent Document 3) has a hot water pipe disposed on the entire back surface of the roofing material, the path of the hot water pipe becomes long and the pipe frictional resistance becomes large. There is a problem that a large amount of energy is required to drive the pump and the running cost increases.
(4) Moreover, since the path of the hot water pipe is long, the temperature of the hot water on the downstream side of the hot water pipe is lowered, and there is a problem that snow cannot be melted near the downstream side.
(5) In the technologies disclosed in (Patent Document 1) to (Patent Document 3), only the temperature around the heat pipe is increased, or a temperature difference occurs between the upstream side and the downstream side of the hot water pipe. There was a problem that temperature spots were generated on the surface and snow melting could not be performed when there was a large amount of snow of several tens of centimeters or more overnight.

The present invention solves the above-mentioned conventional problems, and it can be melted in a soft state before being compacted and slid down from a roof or a fence, obstructing walking or running or causing injury. An object of the present invention is to provide a snow melting structure of a roof or a kite that can remove snow on the entire surface safely without any spots and has excellent snow removal performance.
Another object of the present invention is to provide a snow melting device that has small temperature spots and can remove snow on the installation surface without spots, and has excellent energy saving and low running cost.

In order to solve the above-mentioned conventional problems, the snow melting structure and the snow melting apparatus for roofs and fences of the present invention have the following configurations.
The snow melting structure of a roof or a fence according to claim 1 of the present invention is a snow melting structure of a roof or a fence provided with a heat pipe arranged on the roof or the fence, and the heat pipe is attached to a heat source pipe or And a plurality of substantially parallel arranged heat pipe branch pipes branched from the header pipe, wherein the heat pipe branch pipes are substantially orthogonal to the gradient direction of the roof or fence. The configuration is arranged.
With this configuration, the following effects can be obtained.
(1) Since a heat pipe having a header pipe and a plurality of heat pipe branch pipes branched from the header pipe is arranged, if a heat medium is passed through the heat source pipe to transfer heat to the header pipe, The working fluid evaporates and absorbs a large amount of latent heat of evaporation from the heat source tube. The evaporated vapor is condensed in each of the heat pipe branch pipes to release the heat of condensation. Since the heat pressure is transferred to each heat pipe branch branched from the header pipe by the pressure gradient of the steam generated between the header pipe and each of the heat pipe branch pipe, the header pipe and the heat pipe branch pipe The temperature difference can be almost eliminated.
(2) Since a plurality of heat pipe branch pipes arranged substantially in parallel are arranged substantially orthogonal to the gradient direction of the roof or fence, first, on top of the heat pipe branch pipe and header pipe having a high temperature Since the snow accumulated on the roof surface is melted and the snowmelt water flows along the roof surface along the roof gradient, the lower surface of the snow accumulated on the roof surface between the heat pipe branch pipes is melted by the snowmelt water. Since the roof snow on the heat pipe branch pipe and the header pipe melts quickly, the roof snow is divided into a plurality of square blocks cut out by the heat pipe branch pipe and the header pipe. And the tensile force which supported the roof snow against gravity against the upper part is cut and each block becomes free, and each slides out and slides down, so the roof snow can be removed. The snow that falls on the roof is immediately melted and divided into blocks, and then slides down from the roof before it is compacted. In addition, it does not hinder people from walking or driving, and there is no risk of injury to people.
(3) Since a plurality of heat pipe branch pipes are branched from the header pipe so as to cover the installation surface of the roof or fence widely, even if the header pipe length is short, a large area of the roof or fence is used for the heat pipe. Since it can heat with a branch pipe, a header pipe | tube can be shortened. For this reason, the length of the heat source pipe penetrating or attached to the header pipe can be shortened, the path of the heat source pipe disposed on the roof is shortened, and the pipe friction resistance is reduced. Requires only a small output, and requires little energy to drive the pump, reducing running costs.

Here, as the heat pipe, a header pipe is provided on one side of a plurality of heat pipe branch pipes arranged substantially in parallel, a heat pipe branch pipe is provided on the left and right around the header portion, a heat pipe The thing etc. which arrange | positioned the header pipe | tube on the both sides of a branch pipe can be used.
A wick having a predetermined thickness or depth can be provided on all or part of the inner wall of the header pipe or the heat pipe branch pipe. As the wick, sintered metal, wire mesh, metal fiber, glass fiber, and many thin grooves are used. By providing a wick, even when the header pipe is positioned higher than the heat pipe branch pipe, the working fluid condensed in the heat pipe branch pipe can be evaporated back to the header pipe using the capillary phenomenon. It is possible to prevent dryout from occurring.

  In order to increase the heat transfer area to the roof surface, the header pipe and heat pipe branch pipe have a substantially rectangular shape and a substantially rectangular cross section perpendicular to the longitudinal direction of the header pipe and heat pipe branch pipe so that the top surface is flat. It is preferable to form in a substantially triangular shape, a substantially oval shape, or a substantially semicircular shape. If a header pipe or heat pipe branch pipe having a substantially circular cross section is used, if a flat plate is fixed to the upper surface by welding or the like, a roof pipe or heat pipe branch pipe with a flat upper surface is used, as in the case of using a header pipe or heat pipe branch pipe. The heat transfer area to the surface can be expanded.

As a material of the header pipe or the heat pipe branch pipe, a metal made of copper, stainless steel, aluminum, magnesium, titanium, or the like is used.
The heat pipe is filled with an antifreeze working fluid that does not freeze to around −30 ° C., such as HCFC solvents of HCFC-141b and 142b, HFC134a, and the like.

As the material of the heat source pipe, copper, stainless steel, aluminum, magnesium, titanium, or other metal is used.
Well water, hot spring water, ground water, etc. that are heated by geothermal heat and maintained at a substantially constant water temperature throughout the year can be used as the heat medium that is introduced into the heat source pipe and heats the header pipe. River water and waste water from factories and households can also be used. Moreover, the antifreeze liquid etc. which were heated by geothermal heat, drainage, etc. can be used. By introducing a heat medium using exhaust heat such as underground heat or waste water into the heat source pipe, a heat source such as a boiler for heating the heat medium becomes unnecessary, so that the running cost can be reduced.
The heat source pipe is penetrated or attached to the header pipe, but is preferably penetrated. When the heat source pipe is inserted through the header pipe, the heat of the heat medium is transferred to the working fluid of the heat pipe through the wall surface of the heat source pipe, but when the heat source pipe is attached to the header pipe, the wall surface of the heat source pipe This is because heat is transferred to the working fluid of the heat pipe through the wall surface of the header pipe and a loss occurs.

  The heat pipe branch pipes are arranged so as to intersect at an angle of 60 to 90 °, preferably 70 to 90 ° with respect to the gradient direction of the roof, substantially perpendicular to the gradient direction of the roof or fence. As the angle of arrangement decreases by 70 °, the snowmelt water on the roof snow above the heat pipe branch becomes easier to flow along the heat pipe branch pipe, and only the snow around the heat pipe branch melts. A snow cave that penetrates to the eaves is formed, and the snow around the snow cave tends to remain on the roof, and the snow accumulates one after another to be compacted. When the angle is smaller than 60 °, this tendency is remarkable, which is not particularly preferable.

The invention according to claim 2 of the present invention is the snow melting structure of the roof or fence according to claim 1, wherein two ends of each of the heat pipe branch pipes are arranged with a space therebetween. The header pipe is configured to communicate with each of the header pipes.
With this configuration, in addition to the operation obtained in the first aspect, the following operation can be obtained.
(1) Since both ends of each of the heat pipe branch pipes communicate with each of the two header pipes, when heat medium is passed through the heat source pipe of the header pipe to transmit heat to the header pipe, Heat is released by the transfer of latent heat accompanying the evaporation of the working fluid and the condensation in the heat pipe branch pipe, but since this heat transfer is performed in each of the two header pipes, the temperature spots of the heat pipe are further reduced. The snow facing the roof surface can be melted even more without spots.

The invention according to claim 3 of the present invention is the snow melting structure of the roof or fence according to claim 1 or 2, wherein a cross section perpendicular to the longitudinal direction of the header pipe and the heat pipe branch pipe is substantially rectangular. The upper surface is formed in any one of a substantially rectangular shape, a substantially triangular shape, a substantially oval shape, and a substantially semicircular shape, and the upper surface is flat and wide.
With this configuration, in addition to the operation obtained in the first or second aspect, the following operation can be obtained.
(1) The header pipe and the heat pipe branch pipe are formed in any one of a substantially rectangular shape, a substantially rectangular shape, a substantially triangular shape, a substantially oval shape, and a substantially semicircular shape, and the upper surface (heat transfer surface) is flat. Therefore, the heat transfer surface between the header pipe and the far-infrared radiation plate of the heat pipe branch pipe can be increased, and the heat transfer efficiency with the roof surface can be increased.

  Here, if the cross section orthogonal to the longitudinal direction of the header pipe and the heat pipe branch pipe is made into a substantially rectangular shape or a substantially rectangular shape, the four outer peripheral surfaces of the header pipe and the heat pipe branch pipe can be flattened. When a heat dispersion member made of aluminum or the like that conveys heat from the pipe is fitted between the heat pipe branch pipes, the side surface of the heat distribution member and the side wall of the heat pipe branch pipe are brought into surface contact to widen the contact area. The heat exchange efficiency with the heat dispersion member can be increased. Moreover, since the bottom surface of the header pipe and the heat pipe branch pipe is also formed flat, it can be stably installed on a roof surface board, a field road board, a roof tile, etc., and is excellent in workability and preferable.

According to a fourth aspect of the present invention, there is provided the snow melting structure of the roof or the fence according to any one of the first to third aspects, wherein an upper surface is an upper surface and a surface of the heat pipe branch pipe and the header pipe. It has a configuration including a heat dispersion member formed between one and slightly lower and disposed between the heat pipe branch pipes.
According to this configuration, in addition to the action obtained in any one of claims 1 to 3, the following action is obtained.
(1) Since the upper surface is formed to be flush with or slightly lower than the upper surfaces of the heat pipe branch pipe and the header pipe, and the heat dispersion member is disposed between the heat pipe branch pipes, the heat pipe branch pipe and the header pipe Thus, heat can be reliably transferred to the roof surface over the entire upper surface of the heat dispersion member.
(2) The side surface of the heat distribution member and the side wall of the heat pipe branch pipe or header pipe can be brought into contact with each other to transmit heat from the heat pipe to the heat distribution member to widen the heat radiation area, thereby reducing the temperature spot on the roof surface. can do.
(3) Since the top surfaces of the heat pipe branch and header tubes and the top surface of the heat dissipating member are substantially flush, the heat pipe and the heat dissipating member can be handled like a planar panel, and the roof Since the surface can be supported by the entire surface of the heat pipe and the heat dispersion member, it is possible to prevent the roof surface from being deformed or cracked by the weight of snow.

  Here, as the heat dispersion member, one made of copper, stainless steel, aluminum, magnesium, titanium, or other metal, or mortar, concrete, or other inorganic material is used. In particular, those made of metal such as copper, stainless steel, aluminum, magnesium, titanium, etc. are preferred because of their high thermal conductivity.

  The heat dispersion member is formed so that the upper surface thereof is flush with or slightly lower than the upper surfaces of the heat pipe branch pipe and the header pipe. Specifically, the upper surface of the heat dispersion member and the heat pipe branch pipe and the header pipe The difference from the height of the upper surface is 0 to 1 mm, preferably 0 to 0.5 mm. As the height difference becomes larger than 0.5 mm, the roof surface deforms at the edge of the heat pipe branch pipe or header pipe due to the weight of snow due to the step between the heat pipe branch pipe and header pipe and the heat dispersion member. There is a tendency for holes to easily open. Since this tendency will become remarkable when it becomes larger than 1 mm, it is not especially preferable.

A snow melting device according to claim 5 of the present invention is a snow melting device used in the snow melting structure of a roof or a fence according to any one of claims 1 to 4, wherein the snow melting device is connected to the heat pipe and the heat source pipe. And a loop pipe that circulates the antifreeze collected from the hole formed in the ground.
With this configuration, the following effects can be obtained.
(1) Since the antifreeze is heated to about 13 ° C with geothermal heat at a stable temperature of about 15-17 ° C throughout the year, and this antifreeze is circulated through the heat source pipe, the heat pipe and roof surface are kept at about 2 ° C. It can be used for melting snow by heating and does not require special energy for heating the antifreeze liquid of the heat medium, and it is safe and excellent in energy saving.
(2) Even when the pump for circulating the antifreeze liquid is stopped, the antifreeze liquid can be prevented from freezing inside the heat source pipe or the like.

Here, various underground heat collecting elements can be used to collect heat from the hole formed in the ground. For example, a pipe filled with a heat medium is arranged in a casing driven to about 10 to 50 m underground. It is possible to use an underground heat exchanger formed by a bore hole, a spiral pipe, or the like. The bore hole can be either a double tube type or a U-shaped tube type.
The pipe in the borehole or the underground heat exchanger and the heat source pipe are connected by a transport pipe covered with a heat insulating material to form a loop pipe. The antifreeze liquid should be kept from filling up inside the borehole and underground heat exchanger pipe, inside the transport pipe, and inside the loop pipe inside the heat source pipe. As a result, if a simple pump is provided in the loop piping, the antifreeze can be easily raised from the borehole to the roof with a small lift.

  An antifreeze such as ethylene glycol, propylene glycol, or aqueous potassium acetate solution is circulated in the heat source pipe as a heat medium.

A sixth aspect of the present invention is the snow melting device according to the fifth aspect, wherein the hermetic expansion tank is connected to the loop pipe.
With this configuration, in addition to the operation obtained in the fifth aspect, the following operation can be obtained.
(1) Since the expansion tank buffers the volume change caused by the thermal expansion / contraction of the antifreeze liquid filled in the loop pipe, the loop pipe is filled with the antifreeze liquid. Can be raised to the roof.

As described above, according to the snow melting structure and the snow melting apparatus of the roof and the fence of the present invention, the following advantageous effects can be obtained.
According to the invention of claim 1,
(1) If there is a slight temperature difference, a large amount of heat can be transported from the header pipe to the heat pipe branch pipe in a short time, and the temperature difference between the header pipe and the heat pipe branch pipe can be made almost zero. It is possible to provide a snow melting structure of a roof or a kite that hardly causes temperature spots.
(2) The snow that falls on the roof, etc. is immediately melted by the heat of the heat pipe branch pipe and header pipe, divided into blocks, and slides down from the roof in a soft state before being compacted. Therefore, it is possible to provide a snow melting structure of a roof and a kite that is remarkably excellent in snow removal performance that can safely slide down and remove roof snow without hindering walking or running or causing injury. .
(3) Since a plurality of heat pipe branch pipes are branched from the header pipe, the length of the heat source pipe penetrating or attached to the header pipe can be shortened, and the path of the heat source pipe disposed on the roof This shortens the pipe friction resistance and reduces the pipe frictional resistance. Therefore, the pump for sending the heat medium needs only a small output, and the pump can be driven with little energy.

According to invention of Claim 2, in addition to the effect of Claim 1,
(1) The temperature spots of the heat pipe can be further reduced, and a snow melting structure of a roof or a kite with less snow melting spots that can melt the snow facing the roof surface without spots can be provided.

According to invention of Claim 3, in addition to the effect of Claim 1 or 2,
(1) A heat transfer area can be increased, and a snow melting structure of a roof or a kite excellent in heat exchange efficiency can be provided.
(2) It is possible to provide a snow melting structure of a roof or a kite that can be stably installed on a roof face plate, a field road plate, a tile rod, etc. and has excellent workability.

According to the invention of claim 4, in addition to the effect of any one of claims 1 to 3,
(1) It is possible to reliably transfer heat from the heat pipe branch pipe and the header pipe to the roof surface, and to provide a snow melting structure of a roof or a fence with few snow melting spots.
(2) The side surface of the heat dispersion member and the side wall of the heat pipe branch pipe or the header pipe can be brought into contact with each other to increase the heat radiation area, thereby reducing the temperature spot on the roof surface and reducing the snow melting spot on the roof or roof. The snow melting structure can be provided.
(3) Since the heat pipe and the heat dissipating member can be handled like a planar panel and the roof surface can be supported by the entire surface of the heat pipe and the heat dissipating member, the roof surface is deformed or perforated by the weight of snow. Can be easily opened, and a snow melting structure of a roof and a kite excellent in durability can be provided.

According to the invention of claim 5,
(1) It is possible to provide a snow melting device that is safe and excellent in energy saving without requiring special energy for heating the heat medium.
(2) Even if an unexpected situation occurs in which the pump that circulates antifreeze liquid stops, it can be prevented that the antifreeze liquid freezes inside the heat source pipe, etc., and if the antifreeze liquid is recirculated, snow melting will resume immediately. It is possible to provide a snow melting device with excellent maintainability.

According to the invention described in claim 6, in addition to the effect of claim 5,
(1) Since the expansion tank buffers the volume change caused by the thermal expansion / contraction of the antifreeze liquid filled in the loop pipe, the loop pipe is filled with the antifreeze liquid. It is possible to provide a snow melting device that can raise the roof to the roof.

The partially broken perspective view which shows the snow melting structure which installed the snow melting apparatus in Embodiment 1 in the roof of a house Plan view of heat pipe of snow melting device in embodiment 1 Sectional drawing of the principal part of the snow melting structure of the roof which cut | disconnected the roof which installed the snow melting apparatus in Embodiment 1 in the orthogonal | vertical direction 3 is a cross-sectional end view of the main part taken along line AA in FIG. (A) Schematic perspective view of heat dispersion member of modification example (b) Main part sectional view of heat dispersion member of modification example Plan view of heat pipe of snow melting device in embodiment 2 Plan view of heat pipe of snow melting device in embodiment 3 The model perspective view which shows the state except the roof material of the snow melting structure which installed the heat pipe of the snow melting apparatus in Embodiment 4 in the roof of a house

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Snow melting apparatus 2, 2a, 2c, 2d Heat pipe 3, 3a, 3b Header pipe 4 Heat pipe branch pipe 5 Heat source pipe 6 Connection pipe 7 Joint 8 Connection pipe 10 Bore hole 11 Casing 12 Pipe 13 Transport pipe 14 Pump 15 Branch pipe 16 Expansion tank 20, 20a House 21 Roof 22 Rafter 23 Field plate 24 Hiroko Mai 26 Base material 27 Nasal cover 28, 28a Heat distribution member 28b Heat insulation material 29 Roof material

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 is a partially broken perspective view showing a snow melting structure of a roof in which the snow melting device in the first embodiment is installed on the roof of a house, and FIG. 2 is a plan view of a heat pipe of the snow melting device in the first embodiment. FIG. 3 is a cross-sectional view of the main part of the snow melting structure of the roof obtained by vertically cutting the roof on which the snow melting device according to the first embodiment is installed, and FIG. 4 is a cross-sectional end view of the main part taken along line AA in FIG. FIG. 5A is a schematic perspective view of a modified example of the heat dispersion member, and FIG. 5B is a cross-sectional view of a main part of the heat dispersion member of the modification.
In FIG. 1, reference numeral 1 denotes a snow melting device in the first embodiment installed on a gable roof 21 of a house 20, and 2 denotes a heat pipe of the snow melting device 1 arranged in parallel on the entire surface of the roof 21 having a slope, 5 Is a heat source pipe to be described later, 6 is a connection pipe to be described later for connecting the heat source pipes 5 and 5, 7 is a joint connected to the heat source pipes 5 and 5 of the heat pipes 2 and 2, and 8 is connected to the joint 7. The connecting pipes connect the heat source pipes 5 and 5 of the heat pipes 2 and 2 arranged side by side.
10 is a borehole of an underground heat collecting element formed in the ground, 11 is a casing driven to a depth of about 10 to 50 m underground, 12 is a double pipe or a U-shaped pipe disposed in the casing, etc. A pipe 13 is covered with a heat insulating material (not shown), connects the pipe 12 and the heat source pipes 5 and 5 to form a loop pipe, 14 is a pump disposed in the transport pipe 13 forming the loop pipe, 15 A branch pipe 16 branched from the transport pipe 13 is a sealed expansion tank whose lower part is connected to the branch pipe 15 and a heat medium is accommodated on the branch pipe 15 side by a diaphragm or the like (not shown). In the heat source pipe 5, the connecting pipe 6, the connecting pipe 8, the pipe 12 in the bore hole 10, the transport pipe 13, and the pump 14, an antifreeze heat medium (antifreeze liquid) such as ethylene glycol, propylene glycol, potassium acetate aqueous solution or the like is present. The heat source pipe 5, the connecting pipe 6, the connecting pipe 8, the pipe 12, the transport pipe 13, and the volume change caused by the expansion / contraction of the heat medium filled in the pump 14 are expanded. Buffer with the heat medium in the tank 16.

In FIG. 2, 2 is a heat pipe in which antifreezing working fluid that does not freeze until around -30 ° C. is enclosed, 3 and 3 are two header pipes arranged substantially in parallel, and 4 are both ends. Are a plurality of heat pipe branch pipes communicating with each of the two header pipes 3 and 3 and arranged substantially in parallel. In the present embodiment, the sections perpendicular to the longitudinal direction of the header pipe 3 and the heat pipe branch pipe 4 are formed in the same rectangular shape.
Reference numeral 5 denotes a heat source pipe penetrating along the longitudinal direction of the header pipe 3, and both end portions of the header pipe 3 are sealed with outer peripheral walls at both ends of the heat source pipe 5. Reference numeral 6 denotes a connecting pipe for connecting the end portions of the heat source pipes 5 and 5.
In the present embodiment, the heat pipe 2 is arranged such that the header pipe 3 is arranged along the gradient direction of the roof 21 and the heat pipe branch pipe 4 is substantially orthogonal to the gradient direction of the roof 21. In addition, the heat pipe branch pipe 4 can be arrange | positioned so that the angle with respect to the gradient direction of the roof 21 may be in the range of 60-90 degrees, preferably 70-90 degrees. As a result, the snowmelt water melted by the heat of the heat pipe branch pipe 4 flows in a plane on the roof material 29, so that only the snow around the heat pipe branch pipe 4 melts and penetrates to the eaves as in the past. A snow cave is formed, and the snow around the snow cave can be prevented from remaining on the roof and being hardened to prevent snow removal.
Further, the heat medium heated in the bore hole 10 is introduced from the eaves side of the heat source pipe 5 of the heat pipe 2 installed on the roof 21 through the transport pipe 13, and passes through the roof 21 through the upstream connection pipe 6. The heat source pipe 5 descends from the ridge side of the opposing heat source pipe 5, enters the ridge side of the heat source pipe 5 of the adjacent heat pipe 2 through the joint 7 and the connecting pipe 8, rises up the roof 21, and opposes through the connection pipe 6. 5, descends from the ridge side, passes through the transport pipe 13 and is returned to the borehole 10.

3 and 4, 22 is a rafter of the roof 21, 23 is a field board disposed on the rafter 22, 24 is a large and small dance attached to the rafter 22 at the eaves, 26 is plywood, made of aluminum The base material on which the heat pipe 2 is placed on the upper surface of the field plate 23 formed in a plate shape, etc. 27 is a nasal cover disposed on the end face of the eaves of the rafters 22 and Hiroko Mai 24, 28 The heat pipe branch pipes 4, 4 and the header pipes 3, 3 are formed in a heat conductive plate shape made of aluminum or the like so that the upper surfaces thereof are flush with or slightly lower than the upper surfaces of the heat pipe branch pipe 4 and the header pipe 3. The heat dissipating member is inserted between the heat pipe branch pipes 4, 4 and the header pipes 3, 3 to transmit heat, 29 is made of steel, clad steel, alloy steel such as stainless steel, molten aluminum / zinc composite Formed with gold-plated steel sheet (galvalume steel sheet), painted plate material, etc. , The heat pipe 2 from the ridge of the roof 21, a roofing material laid on the upper surface of the heat spreader 28.
In FIG. 5, 28a is a heat dispersion member of a modified example made of a metal such as aluminum and having a thin-walled one side opening, and 28b is an inorganic fiber system such as glass wool or rock wool, urethane foam, expanded polystyrene, etc. This is a heat insulating material formed of fiber such as synthetic resin or wood fiber and fitted in the opening of the heat dispersion member 28a. The heat dispersion member 28a can be arranged in place of the heat dispersion member 28 with the opening in which the heat insulating material 28b is fitted on the base material 26 side and the flat surface on the roof material 29 side. Since the heat dissipating member 28a of the modified example is formed in a thin box shape, it can be reduced in weight, and since the heat insulating material 28b is fitted in the opening, heat radiation to the base material 26 side is reduced. Can reduce heat loss.

About the snow melting structure and the snow melting apparatus in Embodiment 1 of this invention comprised as mentioned above, the usage method is demonstrated below.
The heat medium in the pipe 12 of the bore hole 10 is heated to about 13 ° C. by underground heat of about 15 to 17 ° C. The heating medium (antifreeze) in the heated pipe 12 is driven by the pump 14 disposed in the transport pipe 13, and the building side of the heat source pipe 5 of the heat pipe 2 installed on the roof 21 from the transport pipe 13. To introduce. The heat medium is introduced from the eaves side of the heat source pipe 5, descends the roof 21 from the ridge side of the opposing heat source pipe 5 through the up connecting pipe 6, passes through the joint 7, the connecting pipe 8, and the heat source of the adjacent heat pipe 2. Enters from the ridge side of the pipe 5, goes up the roof 21, goes down from the ridge side of the opposing heat source pipe 5 through the connection pipe 6, returns to the pipe 12 of the borehole 10 through the transport pipe 13, and circulates in the loop pipe To do. Since the condensed working fluid in the heat pipe 2 easily flows down to the eave side of the header pipe 3 due to gravity, first, the heat held by the heat medium is increased by heating the eave side of one header pipe 3 with the heat medium. The working fluid in the header pipe 3 evaporates toward the heat pipe branch pipe 4 and the other header pipe 3. The working fluid vapor diffuses and condenses in the heat pipe branch pipe 4 to release condensation heat, and dissipates heat to the heat distribution member 28 and the roof material 29 through the wall of the heat pipe branch pipe 4. The heat medium that has flowed through the heat source pipe 5 of one header pipe 3 then enters the heat source pipe 5 of the other header pipe 3 from the ridge side, and evaporates the working fluid in the other header pipe 3. This operation is repeated, and the working fluid condensed by heat exchange is returned to the header pipe 3, and the roof material 29 dissipates heat to the snow accumulated on the surface and melts the snow. In snow melting, first, the snow accumulated on the roof material 29 on the heat pipe branch pipe 4 and the header pipe 3 having a high temperature is melted, and the snow melting water flows on the surface of the roof material 29 along the roof gradient. The lower surface of the snow piled on the roof material 29 in the range surrounded by the branch pipes 4 and 4 and the header pipes 3 and 3 is melted by the snow melting water. Since the roof snow on the heat pipe branch pipe 4 and the header pipe 3 melts quickly, the roof snow is divided into a plurality of rectangular blocks cut out by the heat pipe branch pipes 4, 4 and the header pipes 3, 3. Is done. And the tensile force which supported the roof snow against gravity against the upper part is cut and each block becomes free, and each slides out and slides down, so the roof snow can be removed.

As described above, since the snow melting structure of the roof according to Embodiment 1 of the present invention is configured, the following operation is obtained.
(1) Both ends of the heat pipe branch pipe 4 communicate with each of the two header pipes 3 and 3 arranged substantially in parallel, and the heat medium is transferred from the heat source pipe 5 of one header pipe 3 to the other. Since the working fluid in both header pipes 3 is evaporated to flow through the heat source pipe 5 of the header pipe 3, the heat generated by the transfer of latent heat accompanying the evaporation of the working fluid in the header pipe and the condensation in the heat pipe branch pipe Since the discharge is performed in each of the two header pipes 3 and 3, the temperature spots of the heat pipe 2 can be reduced, and the snow facing the roof material 29 can be melted without spots.
(2) The snow that has fallen on the roof material 29 is immediately melted by the heat of the heat pipe branch pipe 4 and the header pipe 3 and divided into blocks, and from the roof 21 in a soft state before being compacted. Since it slides down, the roof snow can be safely slid down and removed without causing injuries to pedestrians who have hindered human walking or vehicle travel, and the snow removal performance is remarkably excellent.
(3) Since the header pipe 3 and the heat pipe branch pipe 4 have a rectangular cross section, the four outer peripheral surfaces of the header pipe 3 and the heat pipe branch pipe 4 can be flattened. The heat transfer area can be increased. Further, the heat dispersion member 28 made of aluminum or the like is fitted between the heat pipe branch pipes 4 so that the side surfaces of the heat dispersion member 28 and the side walls of the heat pipe branch pipe 4 and the header pipe 3 are brought into surface contact. The contact area can be increased and the heat exchange efficiency can be increased. Further, since the bottom surfaces of the header pipe 3 and the heat pipe branch pipe 4 are formed flat, the header pipe 3 and the heat pipe branch pipe 4 can be stably installed on the base material 26 and have excellent workability.
(4) A heat dispersive member disposed between the heat pipe branch pipes 4 and 4 and the header pipes 3 and 3 and having an upper surface flush with or slightly lower than the upper surfaces of the heat pipe branch pipes 4 and the header pipes 3 28 is provided, heat can be reliably transferred from the heat pipe branch pipe 4 and the header pipe 3 to the roof material 29.
(5) The side surface of the heat dispersion member 28 and the side wall of the heat pipe branch pipe 4 or the header pipe 3 are brought into contact with each other to transmit heat of the heat pipe branch pipe 4 or the header pipe 3 to the heat dispersion member 28 to widen the heat radiation area. The temperature spots of the roof material 29 can be reduced.
(6) Since the upper surfaces of the heat pipe branch pipe 4 and the header pipe 3 and the upper surface of the heat dissipating member 28 are substantially flush, the roof material 29 can be supported by the entire surface of the heat pipe 2 and the heat dispersing member 28. The roof material 29 can be prevented from being deformed by the weight of snow. In addition, the weight of the snow accumulated on the roofing material 29 causes the roofing material 29 to come into close contact with the heat pipe branch pipe 4, the header pipe 3, and the heat dispersion member 28, improving heat transfer and reliably melting the snow. be able to.
(7) Since the front end of the eaves of the roof material 29 is warmed by the heat pipe branch pipe 4 and the header pipe 3, it is possible to prevent the formation of ice pillars.

Moreover, according to the snow melting apparatus in Embodiment 1 of this invention, the following effects are acquired.
(1) Since both end portions of the heat pipe branch pipe 4 communicate with each of the two header pipes 3 and 3 arranged substantially in parallel, evaporation of the working fluid in the header pipe and the heat pipe branch pipe Heat is released by the transfer of latent heat accompanying the condensation of each of the two header pipes 3 and 3, so that the temperature spots of the heat pipe 2 can be reduced and snow can be melted on the installation surface without spots.
(2) Since the heat medium is heated in the borehole 10 using geothermal heat and this heat medium is circulated, the heat pipe 2 and the roofing material 29 can be heated to about 2 ° C. and used for melting snow, It does not require special energy for heating the medium and is safe and excellent in energy saving.
(3) Since the heat source pipe 5, the connecting pipe 6, the pipe 12, the transport pipe 13 and the pump 14 in the bore hole 10 are filled so that the antifreeze heat medium is not interrupted, the simple pump 14 With a small driving force, the heat medium in the loop pipe can be raised from the borehole 10 to the roof 21 and is excellent in energy saving.
(4) Since the expansion tank 16 is connected to the branch pipe 15 branched from the transport pipe 13, the heat source pipe 5, the connection pipe 6, the connecting pipe 8, the pipe 12, the transport pipe 13, and the pump 14 are filled. The volume change accompanying expansion / contraction of the heat medium is buffered by the heat medium in the expansion tank 16, and the heat medium is interrupted in the heat source pipe 5, connection pipe 6, connection pipe 8, pipe 12, transport pipe 13, and pump 14. It can be filled so that nothing happens.

Here, although the case where the heat pipe 2 is installed on the newly installed roof 21 has been described in the present embodiment, the heat pipe 2 may be installed on a roof such as an existing steel sheet roof. In this case, the base material 26 can be disposed on the surface of a roof material such as a steel plate, and the heat pipe 2 can be installed in the same manner as in the present embodiment. In addition, when a tile is formed along the roof gradient direction, a spacer having a height substantially the same as the height of the tile is placed on or between the tiles, and between the spacers. The base material 26 is installed, and the heat pipe 2 is installed as in the present embodiment. In some cases, the base material 26 is installed directly on the roof bar, and the heat pipe 2 is installed thereon.
Moreover, although the case where the heat dispersion member 28 is separately installed on the base material 26 has been described, the base material 26 and the heat dispersion member 28 are integrally formed of metal such as aluminum or concrete, and are integrally formed. In some cases, the header pipe 3 and the heat pipe branch pipe 4 of the heat pipe 2 are fitted into the hollow. Thereby, the effect | action that workability can be improved is acquired.
In addition, the amount of roof snow to be melted on the roof 21 can be increased by providing protrusions or the like on the roof surface of the roof 21 that prevent the melted roof snow from sliding down.
In addition, it is possible to heat the antifreeze flowing through the loop pipe by using the remaining heat of the bath or the waste heat from the factory or household. In this case, a jacket is provided in the transport pipe 13 on the downstream side of the pump 14, and the waste water is introduced into the jacket, and heat is exchanged between the waste water in the jacket and the antifreeze liquid through the pipe wall of the transport pipe 13. Heat the antifreeze with heat. As a result, the temperature of the antifreeze liquid can be temporarily raised, and the roof snow can be melted by exhaust heat, so that the exhaust heat can be effectively used.

(Embodiment 2)
FIG. 6 is a plan view of a heat pipe of the snow melting device in the second embodiment. In addition, the same thing as Embodiment 1 attaches | subjects the same code | symbol, and abbreviate | omits description.
In the figure, 2a is a heat pipe of the snow melting device in the second embodiment, 4a is a plurality of heat pipe branch pipes, one end of which is connected to the header pipe 3 and arranged substantially in parallel, and 5a is attached in the longitudinal direction of the header pipe 3. It is a heat source pipe that is provided and formed to have substantially the same thickness as the header pipe 3.
In the heat pipe 2a of the snow melting apparatus in the second embodiment configured as described above, the header pipe 3 is disposed along the gradient direction of the roof 21, and the heat pipe branch pipe 4a is substantially orthogonal to the gradient direction of the roof 21. It arrange | positions like this and it constructs similarly to Embodiment 1.

As described above, since the heat pipe of the snow melting device in the second embodiment of the present invention is configured, the following operation is obtained in addition to the operation described in the first embodiment.
(1) Since one end of the heat pipe branch pipe 4a communicates with one header pipe 3 and can be made compact, when the roof 21 is small, the circulation path of the heat medium can be simplified and the workability is improved. be able to.
(2) Since the heat source pipe 5a formed to have substantially the same thickness as the header pipe 3 is provided, it is possible to directly exchange heat between the heat medium and the roof material 29 through the pipe wall of the heat source pipe 5a, and the snow melting efficiency Can be increased.

(Embodiment 3)
FIG. 7 is a plan view of a heat pipe of the snow melting device in the third embodiment. In addition, the same thing as Embodiment 1 attaches | subjects the same code | symbol, and abbreviate | omits description.
In the figure, 2b is a heat pipe of the snow melting device in the third embodiment, 4b is a plurality of heat pipe branch pipes having one end communicating with the header pipe 3 and arranged substantially in parallel, and 4c is the other end of the heat pipe branch pipe 4b. It is a pressure equalizing pipe communicating with the.
In the heat pipe 2b of the snow melting apparatus in the third embodiment configured as described above, the header pipe 3 is arranged along the gradient direction of the roof 21 and the heat pipe branch pipe 4b is substantially orthogonal to the gradient direction of the roof 21. It arrange | positions like this and it constructs similarly to Embodiment 1.

As described above, since the heat pipe of the snow melting device in the third embodiment of the present invention is configured, the following operation is obtained in addition to the operation described in the first embodiment.
(1) Since one end of the heat pipe branch pipe 4b communicates with one header pipe 3 and can be made compact, the circulation path of the heat medium can be simplified and the workability can be improved when the roof 21 is small. be able to.
(2) Since the pressure equalizing pipe 4c communicates with the other end of the heat pipe branch pipe 4b, the pressure in the heat pipe branch pipe 4b can be made uniform, and temperature spots can be reduced.

(Embodiment 4)
FIG. 8 is a schematic perspective view showing a state in which a snow melting structure roof material in which the heat pipe of the snow melting device in the fourth embodiment is installed on the roof of a house is removed. In addition, the thing similar to what was demonstrated in Embodiment 1 attaches | subjects the same code | symbol, and abbreviate | omits description.
In the figure, 2c is the heat pipe of the snow melting device in the fourth embodiment, which is arranged on the roof of the close-up type house 20a, and 3a, 3a are both narrowed inward toward the ridge side and the interval is temporarily narrowed. Header pipe.
2d is a heat pipe of the snow melting device of the modified example in Embodiment 4 arranged on the roof of the house 20a, and 3b and 3b are header pipes in which one side is narrowed to the inside for a while and the interval is narrowed for a while. is there. The header pipes 3a and 3a of the heat pipe 2a and the header pipes 3b and 3b of the heat pipe 2b are connected to a plurality of heat pipe branch pipes 4 arranged substantially in parallel at both ends. Is substantially orthogonal to the slope direction of the roof, and is arranged so as to intersect with the slope direction of the roof 21 at an angle of 60 to 90 °, preferably 70 to 90 °.
As described above, since the heat pipe of the snow melting device in the fourth embodiment is configured, it can be arranged freely on the entire surface of the roof according to the shape of the roof, and the snow on the entire surface of the roof is melted and removed. can do.

  In addition, although the snow melting structure of the roof was demonstrated in Embodiment 1 thru | or 4, similarly, the snow melting structure of a fence is provided by installing the snow melting apparatus demonstrated in Embodiment 1 thru | or 4 also in fences, such as a persimmon. can do.

  TECHNICAL FIELD The present invention relates to a snow melting structure and a snow melting device for a roof and a fence that melt and remove snow accumulated on a fence such as a roof and a persimmon and relates to a snow melting device that melts in a soft state before being compacted. Providing a snow melting structure for roofs and reeds that can slide down and can remove snow on the entire surface safely without hindering walking or running or causing injuries, etc. In addition, it is possible to provide a snow melting device that has small temperature spots and can remove snow on the installation surface without spots, and has excellent energy saving performance and low running cost.

[0003]
Had the problem of being unable to melt snow.
[0004]
The present invention solves the above-mentioned conventional problems, and it can be melted in a soft state before being compacted and slid down from a roof or a fence, obstructing walking or running or causing injury. An object of the present invention is to provide a snow melting structure of a roof or a kite that can remove snow on the entire surface safely without any spots and has excellent snow removal performance.
Another object of the present invention is to provide a snow melting device that has small temperature spots and can remove snow on the installation surface without spots, and has excellent energy saving and low running cost.
Means for Solving the Problems [0005]
In order to solve the above-mentioned conventional problems, the snow melting structure and the snow melting apparatus for roofs and fences of the present invention have the following configurations.
The snow melting structure of a roof or a fence according to claim 1 of the present invention is a snow melting structure of a roof or a fence provided with a heat pipe arranged on the roof or the fence, and the heat pipe is attached to a heat source pipe or Two header pipes that are provided and spaced apart from each other, and both end portions thereof communicate with each of the header pipes and branch off from the header pipe, and are arranged in a plurality of substantially parallel directions. The heat pipe branch pipe arranged substantially orthogonal to the gradient direction and a connection pipe connected between the end portions of the heat source pipe are provided.
With this configuration, the following effects can be obtained.
(1) Since a heat pipe having a header pipe and a plurality of heat pipe branch pipes branched from the header pipe is arranged, if a heat medium is passed through the heat source pipe to transfer heat to the header pipe, The working fluid evaporates and absorbs a large amount of latent heat of evaporation from the heat source tube. The evaporated vapor is condensed in each of the heat pipe branch pipes to release the heat of condensation. Since the heat pressure is transferred to each heat pipe branch branched from the header pipe by the pressure gradient of the steam generated between the header pipe and each of the heat pipe branch pipe, the header pipe and the heat pipe branch pipe The temperature difference can be almost eliminated.
(2) Since a plurality of heat pipe branch pipes arranged substantially in parallel are arranged substantially orthogonal to the gradient direction of the roof or fence, first, on top of the heat pipe branch pipe and header pipe having a high temperature Since the snow accumulated on the roof surface is melted and the snowmelt water flows along the roof surface along the roof gradient, the lower surface of the snow accumulated on the roof surface between the heat pipe branch pipes is melted by the snowmelt water. He

[0004]
Since the roof snow on the top pipe branch pipe and the header pipe melts quickly, the roof snow is divided into a plurality of rectangular blocks cut out by the heat pipe branch pipe and the header pipe. And the tensile force which supported the roof snow against gravity against the upper part is cut and each block becomes free, and each slides out and slides down, so the roof snow can be removed. The snow that falls on the roof is immediately melted and divided into blocks, and then slides down from the roof before it is compacted. In addition, it does not hinder people from walking or driving, and there is no risk of injury to people.
(3) Since a plurality of heat pipe branch pipes are branched from the header pipe so as to cover the installation surface of the roof or fence widely, even if the header pipe length is short, a large area of the roof or fence is used for the heat pipe. Since it can heat with a branch pipe, a header pipe | tube can be shortened. For this reason, the length of the heat source pipe penetrating or attached to the header pipe can be shortened, the path of the heat source pipe disposed on the roof is shortened, and the pipe friction resistance is reduced. Requires only a small output, and requires little energy to drive the pump, reducing running costs.
(4) Since the condensed working fluid in the heat pipe tends to flow down to the eave side of the header pipe due to gravity, first, the heat held by the heat medium is increased by heating the eave side of one header pipe with the heat medium. The working fluid in the header pipe evaporates toward the heat pipe branch pipe and the other header pipe. Since both ends of each of the heat pipe branch pipes communicate with each of the two header pipes, when a heat medium is passed through the heat source pipe of the header pipe and heat is transferred to the header pipe, the working fluid in the header pipe Heat is released by the transfer of latent heat that accompanies evaporation and condensation in the heat pipe branch pipe, but since this heat transfer is performed in each of the two header pipes, the temperature spots of the heat pipe can be further reduced. The snow facing the roof surface can be melted even more.
[0006]
Here, as the heat pipe, a header pipe is provided on one side of a plurality of heat pipe branch pipes arranged substantially in parallel, a heat pipe branch pipe is provided on the left and right around the header portion, a heat pipe The thing etc. which arrange | positioned the header pipe | tube on the both sides of a branch pipe can be used.
A wick having a predetermined thickness or depth can be provided on all or part of the inner wall of the header pipe or the heat pipe branch pipe. As the wick, sintered metal, wire mesh, metal fiber, glass fiber, and many thin grooves are used. By providing a wick, even when the header pipe is positioned higher than the heat pipe branch pipe, the working fluid condensed in the heat pipe branch pipe can be evaporated back to the header pipe using the capillary phenomenon. It is possible to prevent dryout from occurring.
[0007]
In order to increase the heat transfer area to the roof surface, the header pipe and heat pipe branch pipe have a substantially rectangular shape and a substantially rectangular cross section perpendicular to the longitudinal direction of the header pipe and heat pipe branch pipe so that the top surface is flat. It is preferable to form in a substantially triangular shape, a substantially oval shape, or a substantially semicircular shape. If a header pipe or heat pipe branch pipe with a substantially circular cross section is used, a flat plate is fixed to the upper surface by welding or the like.

[0005]
By doing so, the heat transfer area to the roof surface can be expanded as in the case of using a header pipe or a heat pipe branch pipe having a flat upper surface.
[0008]
As a material of the header pipe or the heat pipe branch pipe, a metal made of copper, stainless steel, aluminum, magnesium, titanium, or the like is used.
The heat pipe is filled with an antifreeze working fluid that does not freeze to around −30 ° C., such as HCFC solvents of HCFC-141b and 142b, HFC134a, and the like.
[0009]
As the material of the heat source pipe, copper, stainless steel, aluminum, magnesium, titanium, or other metal is used.
Well water, hot spring water, ground water, etc. that are heated by geothermal heat and maintained at a substantially constant water temperature throughout the year can be used as the heat medium that is introduced into the heat source pipe and heats the header pipe. River water and waste water from factories and households can also be used. Moreover, the antifreeze liquid etc. which were heated by geothermal heat, drainage, etc. can be used. By introducing a heat medium using exhaust heat such as underground heat or waste water into the heat source pipe, a heat source such as a boiler for heating the heat medium becomes unnecessary, so that the running cost can be reduced.
The heat source pipe is penetrated or attached to the header pipe, but is preferably penetrated. When the heat source pipe is inserted through the header pipe, the heat of the heat medium is transferred to the working fluid of the heat pipe through the wall surface of the heat source pipe, but when the heat source pipe is attached to the header pipe, the wall surface of the heat source pipe This is because heat is transferred to the working fluid of the heat pipe through the wall surface of the header pipe and a loss occurs.
[0010]
The heat pipe branch pipes are arranged so as to intersect at an angle of 60 to 90 °, preferably 70 to 90 ° with respect to the gradient direction of the roof, substantially perpendicular to the gradient direction of the roof or fence. As the angle of arrangement decreases by 70 °, the snowmelt water on the roof snow on the heat pipe branch pipes will easily flow along the heat pipe branch pipes, and only the snow around the heat pipe branch pipes will melt. A snow cave that penetrates to the eaves is formed, and the snow around the snow cave tends to remain on the roof, and the snow accumulates one after another to be compacted. If the angle is smaller than 60 °, this tendency is remarkable, which is not particularly preferable.
[0011]

[0006]
[0012]
The invention according to claim 2 of the present invention is the snow melting structure of the roof or fence according to claim 1, wherein a cross section perpendicular to the longitudinal direction of the header pipe and the heat pipe branch pipe is substantially rectangular, It is formed in any one of a square shape, a substantially triangular shape, a substantially oval shape, and a substantially semicircular shape, and has a configuration in which the upper surface is formed flat and wide.
With this configuration, in addition to the operation obtained in the first aspect, the following operation can be obtained.
(1) The header pipe and the heat pipe branch pipe are formed in any one of a substantially rectangular shape, a substantially rectangular shape, a substantially triangular shape, a substantially oval shape, and a substantially semicircular shape, and the upper surface (heat transfer surface) is flat. Therefore, the heat transfer surface between the header pipe and the far-infrared radiation plate of the heat pipe branch pipe can be increased, and the heat transfer efficiency with the roof surface can be increased.
[0013]
Here, if the cross section orthogonal to the longitudinal direction of the header pipe and the heat pipe branch pipe is made into a substantially rectangular shape or a substantially rectangular shape, the four outer peripheral surfaces of the header pipe and the heat pipe branch pipe can be flattened. When a heat dispersion member made of aluminum or the like that conveys heat from the pipe is fitted between the heat pipe branch pipes, the side surface of the heat distribution member and the side wall of the heat pipe branch pipe are brought into surface contact to widen the contact area. The heat exchange efficiency with the heat dispersion member can be increased. Moreover, since the bottom surface of the header pipe and the heat pipe branch pipe is also formed flat, it can be stably installed on a roof surface board, a field road board, a roof tile, etc., and is excellent in workability and preferable.
[0014]
The invention according to claim 3 of the present invention is the snow melting structure of the roof or fence according to claim 1 or 2, wherein the upper surface is flush with or slightly above the upper surfaces of the heat pipe branch pipe and the header pipe. The heat dissipating member is provided low and is provided between the heat pipe branch pipes.

[0007]
With this configuration, in addition to the operation obtained in the first or second aspect, the following operation can be obtained.
(1) Since the upper surface is formed to be slightly lower than the upper surface of the heat pipe branch pipe and the header pipe and the heat dispersion member is disposed between the heat pipe branch pipes, the heat pipe branch pipe and the header pipe Thus, heat can be reliably transferred to the roof surface over the entire upper surface of the heat dispersion member.
(2) The side surface of the heat distribution member and the side wall of the heat pipe branch pipe or header pipe can be brought into contact with each other to transmit heat from the heat pipe to the heat distribution member to widen the heat radiation area, thereby reducing the temperature spot on the roof surface. can do.
(3) Since the top surfaces of the heat pipe branch and header tubes and the top surface of the heat dissipating member are substantially flush, the heat pipe and the heat dissipating member can be handled like a planar panel, and the roof Since the surface can be supported by the entire surface of the heat pipe and the heat dispersion member, it is possible to prevent the roof surface from being deformed or cracked by the weight of snow.
[0015]
Here, as the heat dispersion member, a member made of a metal such as copper, stainless steel, aluminum, magnesium, titanium, or an inorganic material such as mortar or concrete is used. In particular, those made of metal such as copper, stainless steel, aluminum, magnesium, titanium, etc. are preferred because of their high thermal conductivity.
[0016]
The heat dispersion member is formed so that the upper surface thereof is flush with or slightly lower than the upper surfaces of the heat pipe branch pipe and the header pipe. Specifically, the upper surface of the heat dispersion member and the heat pipe branch pipe and the header pipe The difference from the height of the upper surface is 0 to 1 mm, preferably 0 to 0.5 mm. As the height difference becomes larger than 0.5 mm, the roof surface deforms at the edge of the heat pipe branch pipe or header pipe due to the weight of the snow due to the step between the heat pipe branch pipe and header pipe and the heat dispersion member. There is a tendency for holes to easily open. Since this tendency will become remarkable when it becomes larger than 1 mm, it is not especially preferable.
[0017]
A snow melting device according to claim 4 of the present invention is a snow melting device used in a snow melting structure of a roof or a fence according to any one of claims 1 to 3, wherein the snow melting device is connected to the heat pipe and the heat source pipe. And a loop pipe that circulates the antifreeze collected from the hole formed in the ground.

[0008]
With this configuration, the following effects can be obtained.
(1) Since the antifreeze is heated to about 13 ° C with geothermal heat at a stable temperature of about 15-17 ° C throughout the year, and this antifreeze is circulated through the heat source pipe, the heat pipe and roof surface are kept at about 2 ° C. It can be used for melting snow by heating and does not require special energy for heating the antifreeze liquid of the heat medium, and it is safe and excellent in energy saving.
(2) Even when the pump for circulating the antifreeze liquid is stopped, the antifreeze liquid can be prevented from freezing inside the heat source pipe or the like.
[0018]
Here, various underground heat collecting elements can be used to collect heat from the hole formed in the ground. For example, a pipe filled with a heat medium is arranged in a casing driven to about 10 to 50 m underground. It is possible to use an underground heat exchanger formed by a bore hole, a spiral pipe, or the like. The bore hole can be either a double tube type or a U-shaped tube type.
The pipe in the borehole or the underground heat exchanger and the heat source pipe are connected by a transport pipe covered with a heat insulating material to form a loop pipe. The antifreeze liquid should be kept from filling up inside the borehole and underground heat exchanger pipe, inside the transport pipe, and inside the loop pipe inside the heat source pipe. As a result, if a simple pump is provided in the loop piping, the antifreeze can be easily raised from the borehole to the roof with a small lift.
[0019]
An antifreeze such as ethylene glycol, propylene glycol, or aqueous potassium acetate solution is circulated in the heat source pipe as a heat medium.
[0020]
The invention according to claim 5 of the present invention is the snow melting device according to claim 4, wherein a closed expansion tank is connected to the loop pipe.
With this configuration, in addition to the operation obtained in the fourth aspect, the following operation can be obtained.
(1) Since the expansion tank buffers the volume change caused by the thermal expansion / contraction of the antifreeze liquid filled in the loop pipe, the loop pipe is filled with the antifreeze liquid. Can be raised to the roof.
Effects of the Invention [0021]
As described above, according to the snow melting structure and the snow melting apparatus of the roof and the fence of the present invention, the following advantageous effects can be obtained.

[0009]
According to the invention of claim 1,
(1) If there is a slight temperature difference, a large amount of heat can be transported from the header pipe to the heat pipe branch pipe in a short time, and the temperature difference between the header pipe and the heat pipe branch pipe can be made almost zero. It is possible to provide a snow melting structure of a roof or a kite that hardly causes temperature spots.
(2) The snow that falls on the roof, etc. is immediately melted by the heat of the heat pipe branch pipe and header pipe, divided into blocks, and slides down from the roof in a soft state before being compacted. Therefore, it is possible to provide a snow melting structure of a roof and a kite that is remarkably excellent in snow removal performance that can safely slide down and remove roof snow without hindering walking or running or causing injury. .
(3) Since a plurality of heat pipe branch pipes are branched from the header pipe, the length of the heat source pipe penetrating or attached to the header pipe can be shortened, and the path of the heat source pipe disposed on the roof This shortens the pipe friction resistance and reduces the pipe frictional resistance. Therefore, the pump for sending the heat medium needs only a small output, and the pump can be driven with little energy.
(4) The temperature unevenness of the heat pipe can be further reduced, and a snow melting structure of a roof or a kite with less snow melting spots that can melt the snow facing the roof surface without any spots can be provided.
[0022]
[0023]
According to invention of Claim 2, in addition to the effect of Claim 1,
(1) A heat transfer area can be increased, and a snow melting structure of a roof or a kite excellent in heat exchange efficiency can be provided.
(2) It is possible to provide a snow melting structure of a roof or a kite that can be stably installed on a roof face plate, a field road plate, a tile rod, etc. and has excellent workability.
[0024]
According to invention of Claim 3, in addition to the effect of Claim 1 or 2,
(1) It is possible to reliably transfer heat from the heat pipe branch pipe and the header pipe to the roof surface, and to provide a snow melting structure of a roof or a fence with few snow melting spots.
(2) The side surface of the heat dispersion member and the side wall of the heat pipe branch pipe or the header pipe can be brought into contact with each other to increase the heat radiation area, thereby reducing the temperature spot on the roof surface and reducing the snow melting spot on the roof or roof. The snow melting structure can be provided.

[0010]
(3) Since the heat pipe and the heat dissipating member can be handled like a planar panel and the roof surface can be supported by the entire surface of the heat pipe and the heat dissipating member, the roof surface is deformed or perforated by the weight of snow. Can be easily opened, and a snow melting structure of a roof and a kite excellent in durability can be provided.
[0025]
According to invention of Claim 4,
(1) It is possible to provide a snow melting device that is safe and excellent in energy saving without requiring special energy for heating the heat medium.
(2) Even if an unexpected situation occurs in which the pump that circulates antifreeze liquid stops, it can be prevented that the antifreeze liquid freezes inside the heat source pipe, etc., and if the antifreeze liquid is recirculated, snow melting will resume immediately. It is possible to provide a snow melting device with excellent maintainability.
[0026]
According to invention of Claim 5, in addition to the effect of Claim 4,
(1) Since the expansion tank buffers the volume change caused by the thermal expansion / contraction of the antifreeze liquid filled in the loop pipe, the loop pipe is filled with the antifreeze liquid. It is possible to provide a snow melting device that can raise the roof to the roof.
BRIEF DESCRIPTION OF THE DRAWINGS [0027]
FIG. 1 is a partially broken perspective view showing a snow melting structure in which the snow melting device in the first embodiment is installed on the roof of a house. FIG. 2 is a plan view of the heat pipe of the snow melting device in the first embodiment. Cross-sectional view of the principal part of the snow-melting structure of the roof obtained by vertically cutting the roof on which the snow-melting device in Embodiment 1 is installed [FIG. 4] Cross-sectional end view of the principal part taken along line AA in FIG. (B) Cross-sectional view of a main part of a heat dispersion member of a modified example [FIG. 6] Plan view of the heat pipe of the snow melting device in the second embodiment [FIG. 7] Snow melting device in the third embodiment [Fig. 8] A snow melting structure in which the heat pipe of the snow melting apparatus in the fourth embodiment is installed on the roof of a house.

  The present invention relates to a snow melting structure and a snow melting device for a roof or a fence that melts and removes snow accumulated on a fence such as a roof or a persimmon.

It is well known that a large amount of snow in a cold region has a great impact on social life. For example, snow on the roof can cause the house to collapse, so it is necessary to remove snow when the amount of snow exceeds a certain level. There is. Snow removal is a task that depends on human power for the most part, is forced to take a lot of time and labor, and is a dangerous task.
In addition, some houses have a large roof slope so that the tight snow can fall naturally by its own weight so that it is not necessary to remove the snow. However, for people and cars traveling on the road, a lump of snow that falls from the roof vigorously becomes a dangerous substance that not only hinders walking and running but also causes injury.
In order to solve such problems, there has been proposed a snow melting device that melts and removes snow on the roof without performing snow removal.
As a conventional technique, (Patent Document 1) states that “an appropriate interval is provided on a roof surface and brackets are projected, and a roof surface plate and a gap are provided on these brackets to support and fix a heating element including a heat pipe. , A snow melting device for roofs in which these heating elements are disposed along the roof slope on the eaves side portion of the roof is disclosed.
(Patent Document 2) states that “a heat pipe group dispersed and installed on a roof surface, a steam header pipe that communicates with each other to form an evaporation section, and a heat medium piped in the steam header pipe There is disclosed a “heat pipe type snow melting device comprising a supply heat medium circulation pipe, a heat medium heating means and a heat medium feed means interposed in the heat medium circulation pipe”.
(Patent Document 3) discloses a “hot water melting apparatus for roofs in which a hot water pipe is provided on the back surface of the roof material and the hot water is circulated to melt snow on the roof”.
Japanese Examined Patent Publication No. 2-48711 Japanese Utility Model Publication No. 3-50867 Japanese Utility Model Publication No. 6-43166

However, the above conventional techniques have the following problems.
(1) In the technology disclosed in (Patent Document 1), since the heating element (3) composed of a heat pipe is fixed to the eave side of the roof, the snow formed on the eave side portion by the snow accumulated on the roof Of the bank, a snow cave (10) is formed in which only the snow around the heating element melts and penetrates to the eaves. For this reason, since the snowmelt water which accumulates on the part of the bank can be made to flow down to the bottom of the eave through the snow cave (10), it is possible to prevent water leakage called “sugamori” caused by the reverse flow of the snowmelt water to the building side. However, the snow around the snow cave (10) cannot be melted because it becomes a so-called “kamakura” snow chamber, and when heavy snow falls, more snow accumulates on the bank and the amount of snow accumulation increases. It was hardened and eventually had the problem of having to snow.
(2) In the technique disclosed in (Patent Document 2), the surrounding snow is melted by the heat pipe (3) disposed along the roof slope to form a snow cave, and the snow melt flows through the snow cave. Therefore, the snow on the roof surface away from the heat pipe (3) and the steam header (4) cannot be melted, and if heavy snow falls, the snow accumulates and the amount of snow increases, eventually it must be removed. I had a problem that I had to.
(3) Since the technique disclosed in (Patent Document 3) has a hot water pipe disposed on the entire back surface of the roofing material, the path of the hot water pipe becomes long and the pipe frictional resistance becomes large. There is a problem that a large amount of energy is required to drive the pump and the running cost increases.
(4) Moreover, since the path of the hot water pipe is long, the temperature of the hot water on the downstream side of the hot water pipe is lowered, and there is a problem that snow cannot be melted near the downstream side.
(5) In the technologies disclosed in (Patent Document 1) to (Patent Document 3), only the temperature around the heat pipe is increased, or a temperature difference occurs between the upstream side and the downstream side of the hot water pipe. There was a problem that temperature spots were generated on the surface and snow melting could not be performed when there was a large amount of snow of several tens of centimeters or more overnight.

The present invention solves the above-mentioned conventional problems, and it can be melted in a soft state before being compacted and slid down from a roof or a fence, obstructing walking or running or causing injury. An object of the present invention is to provide a snow melting structure of a roof or a kite that can remove snow on the entire surface safely without any spots and has excellent snow removal performance.
It is another object of the present invention to provide a snow melting device that has small temperature spots and can remove snow on the installation surface without spots and has excellent energy saving performance and low running cost.

In order to solve the above-mentioned conventional problems, the snow melting structure and the snow melting apparatus of the roof and the fence of the present invention have the following configurations.
The snow melting structure of a roof or a fence according to claim 1 of the present invention is a snow melting structure of a roof or a fence provided with a heat pipe arranged on the roof or the fence, and the heat pipe is attached to a heat source pipe or Two header pipes that are provided and spaced apart from each other, and both end portions thereof communicate with each of the header pipes and branch off from the header pipe, and are arranged in a plurality of substantially parallel directions. A heat pipe branch pipe disposed substantially orthogonal to the gradient direction and a connection pipe connected between the end portions of the heat source pipe are provided.
With this configuration, the following effects can be obtained.
(1) Since a heat pipe having a header pipe and a plurality of heat pipe branch pipes branched from the header pipe is arranged, if a heat medium is passed through the heat source pipe to transfer heat to the header pipe, The working fluid evaporates and absorbs a large amount of latent heat of evaporation from the heat source tube. The evaporated vapor is condensed in each of the heat pipe branch pipes to release the heat of condensation. Since the heat pressure is transferred to each heat pipe branch branched from the header pipe by the pressure gradient of the steam generated between the header pipe and each of the heat pipe branch pipe, the header pipe and the heat pipe branch pipe The temperature difference can be almost eliminated.
(2) Since a plurality of heat pipe branch pipes arranged substantially in parallel are arranged substantially orthogonal to the gradient direction of the roof or fence, first, on top of the heat pipe branch pipe and header pipe having a high temperature Since the snow accumulated on the roof surface is melted and the snowmelt water flows along the roof surface along the roof gradient, the lower surface of the snow accumulated on the roof surface between the heat pipe branch pipes is melted by the snowmelt water. Since the roof snow on the heat pipe branch pipe and the header pipe melts quickly, the roof snow is divided into a plurality of square blocks cut out by the heat pipe branch pipe and the header pipe. And the tensile force which supported the roof snow against gravity against the upper part is cut and each block becomes free, and each slides out and slides down, so the roof snow can be removed. The snow that falls on the roof is immediately melted and divided into blocks, and slides down from the roof before it is compacted, so the snow falling from the roof is as soft as normal snowfall. In addition, it does not hinder people from walking or driving, and there is no risk of injury.
(3) Since a plurality of heat pipe branch pipes are branched from the header pipe so as to cover the installation surface of the roof or fence widely, even if the header pipe length is short, a large area of the roof or fence is used for the heat pipe. Since it can heat with a branch pipe, a header pipe | tube can be shortened. For this reason, the length of the heat source pipe penetrating or attached to the header pipe can be shortened, the path of the heat source pipe disposed on the roof is shortened, and the pipe friction resistance is reduced. Requires only a small output, and requires little energy to drive the pump, reducing running costs.
(4) Since the condensed working fluid in the heat pipe tends to flow down to the eave side of the header pipe due to gravity, first, the heat held by the heat medium is increased by heating the eave side of one header pipe with the heat medium. The working fluid in the header pipe evaporates toward the heat pipe branch pipe and the other header pipe. Since both ends of each of the heat pipe branch pipes communicate with each of the two header pipes, when a heat medium is passed through the heat source pipe of the header pipe and heat is transferred to the header pipe, the working fluid in the header pipe Heat is released by the transfer of latent heat that accompanies evaporation and condensation in the heat pipe branch pipe, but since this heat transfer is performed in each of the two header pipes, the temperature spots of the heat pipe can be further reduced. The snow facing the roof surface can be melted even more.

Here, as the heat pipe, a header pipe is provided on one side of a plurality of heat pipe branch pipes arranged substantially in parallel, a heat pipe branch pipe is provided on the left and right around the header portion, a heat pipe The thing etc. which arrange | positioned the header pipe | tube on the both sides of a branch pipe can be used.
A wick having a predetermined thickness or depth can be provided on all or part of the inner wall of the header pipe or the heat pipe branch pipe. As the wick, sintered metal, wire mesh, metal fiber, glass fiber, and many thin grooves are used. By providing a wick, even when the header pipe is positioned higher than the heat pipe branch pipe, the working fluid condensed in the heat pipe branch pipe can be returned to the header pipe and evaporated using the capillary phenomenon. It is possible to prevent dryout from occurring.

In order to increase the heat transfer area to the roof surface, the header pipe and heat pipe branch pipe have a substantially rectangular shape and a substantially rectangular cross section perpendicular to the longitudinal direction of the header pipe and heat pipe branch pipe so that the top surface is flat. It is preferable to form in a substantially triangular shape, a substantially oval shape, or a substantially semicircular shape. If a header pipe or heat pipe branch pipe having a substantially circular cross section is used, if a flat plate is fixed to the upper surface by welding or the like, a roof pipe or heat pipe branch pipe with a flat upper surface is used, as in the case of using a header pipe or heat pipe branch pipe. The heat transfer area to the surface can be expanded.

As a material of the header pipe or the heat pipe branch pipe, a metal made of copper, stainless steel, aluminum, magnesium, titanium, or the like is used.
The heat pipe is filled with an antifreeze working fluid that does not freeze to around −30 ° C., such as HCFC solvents of HCFC-141b and 142b, HFC134a, and the like.

As the material of the heat source pipe, copper, stainless steel, aluminum, magnesium, titanium, or other metal is used.
Well water, hot spring water, ground water, etc. that are heated by geothermal heat and maintained at a substantially constant water temperature throughout the year can be used as the heat medium that is introduced into the heat source pipe and heats the header pipe. River water and waste water from factories and households can also be used. Moreover, the antifreeze liquid etc. which were heated by geothermal heat, drainage, etc. can be used. By introducing a heat medium using exhaust heat such as underground heat or waste water into the heat source pipe, a heat source such as a boiler for heating the heat medium becomes unnecessary, so that the running cost can be reduced.
The heat source pipe is penetrated or attached to the header pipe, but is preferably penetrated. When the heat source pipe is inserted through the header pipe, the heat of the heat medium is transferred to the working fluid of the heat pipe through the wall surface of the heat source pipe, but when the heat source pipe is attached to the header pipe, the wall surface of the heat source pipe This is because heat is transferred to the working fluid of the heat pipe through the wall surface of the header pipe and a loss occurs.

The heat pipe branch pipes are arranged so as to intersect at an angle of 60 to 90 °, preferably 70 to 90 ° with respect to the gradient direction of the roof, substantially perpendicular to the gradient direction of the roof or fence. As the angle of arrangement decreases by 70 °, the snowmelt water on the roof snow above the heat pipe branch becomes easier to flow along the heat pipe branch pipe, and only the snow around the heat pipe branch melts. A snow cave that penetrates to the eaves is formed, and the snow around the snow cave tends to remain on the roof, and the snow accumulates one after another to be compacted. When the angle is smaller than 60 °, this tendency is remarkable, which is not particularly preferable.

The invention according to claim 2 of the present invention is the snow melting structure of the roof or fence according to claim 1, wherein a cross section perpendicular to the longitudinal direction of the header pipe and the heat pipe branch pipe is substantially rectangular, It is formed in any one of a square shape, a substantially triangular shape, a substantially oval shape, and a substantially semicircular shape, and has a configuration in which the upper surface is formed flat and wide.
With this configuration, in addition to the operation obtained in the first aspect, the following operation can be obtained.
(1) The header pipe and the heat pipe branch pipe are formed in any one of a substantially rectangular shape, a substantially rectangular shape, a substantially triangular shape, a substantially oval shape, and a substantially semicircular shape, and the upper surface (heat transfer surface) is flat. Therefore, the heat transfer surface between the header pipe and the far-infrared radiation plate of the heat pipe branch pipe can be increased, and the heat transfer efficiency with the roof surface can be increased.

  Here, if the cross section orthogonal to the longitudinal direction of the header pipe and the heat pipe branch pipe is made into a substantially rectangular shape or a substantially rectangular shape, the four outer peripheral surfaces of the header pipe and the heat pipe branch pipe can be flattened. When a heat dispersion member made of aluminum or the like that conveys heat from the pipe is fitted between the heat pipe branch pipes, the side surface of the heat distribution member and the side wall of the heat pipe branch pipe are brought into surface contact to widen the contact area. The heat exchange efficiency with the heat dispersion member can be increased. Moreover, since the bottom surface of the header pipe and the heat pipe branch pipe is also formed flat, it can be stably installed on a roof surface board, a field road board, a roof tile, etc., and is excellent in workability and preferable.

The invention according to claim 3 of the present invention is the snow melting structure of the roof or fence according to claim 1 or 2, wherein the upper surface is flush with or slightly above the upper surfaces of the heat pipe branch pipe and the header pipe. The heat dissipating member is provided low and is provided between the heat pipe branch pipes.
With this configuration, in addition to the operation obtained in the first or second aspect, the following operation can be obtained.
(1) Since the upper surface is formed to be flush with or slightly lower than the upper surfaces of the heat pipe branch pipe and the header pipe, and the heat dispersion member is disposed between the heat pipe branch pipes, the heat pipe branch pipe and the header pipe Thus, heat can be reliably transferred to the roof surface over the entire upper surface of the heat dispersion member.
(2) The side surface of the heat distribution member and the side wall of the heat pipe branch pipe or header pipe can be brought into contact with each other to transmit heat from the heat pipe to the heat distribution member to widen the heat radiation area, thereby reducing the temperature spot on the roof surface. can do.
(3) Since the top surfaces of the heat pipe branch and header tubes and the top surface of the heat dissipating member are substantially flush, the heat pipe and the heat dissipating member can be handled like a planar panel, and the roof Since the surface can be supported by the entire surface of the heat pipe and the heat dispersion member, it is possible to prevent the roof surface from being deformed or cracked by the weight of snow.

  Here, as the heat dispersion member, one made of copper, stainless steel, aluminum, magnesium, titanium, or other metal, or mortar, concrete, or other inorganic material is used. In particular, those made of metal such as copper, stainless steel, aluminum, magnesium, titanium, etc. are preferred because of their high thermal conductivity.

  The heat dispersion member is formed so that the upper surface thereof is flush with or slightly lower than the upper surfaces of the heat pipe branch pipe and the header pipe. Specifically, the upper surface of the heat dispersion member and the heat pipe branch pipe and the header pipe The difference from the height of the upper surface is 0 to 1 mm, preferably 0 to 0.5 mm. As the height difference becomes larger than 0.5 mm, the roof surface deforms at the edge of the heat pipe branch pipe or header pipe due to the weight of snow due to the step between the heat pipe branch pipe and header pipe and the heat dispersion member. There is a tendency for holes to easily open. Since this tendency will become remarkable when it becomes larger than 1 mm, it is not especially preferable.

A snow melting device according to claim 4 of the present invention is a snow melting device used in a snow melting structure of a roof or a fence according to any one of claims 1 to 3, wherein the snow melting device is connected to the heat pipe and the heat source pipe. And a loop pipe that circulates the antifreeze collected from the hole formed in the ground.
With this configuration, the following effects can be obtained.
(1) Since the antifreeze is heated to about 13 ° C with geothermal heat at a stable temperature of about 15-17 ° C throughout the year, and this antifreeze is circulated through the heat source pipe, the heat pipe and roof surface are kept at about 2 ° C. It can be used for melting snow by heating and does not require special energy for heating the antifreeze liquid of the heat medium, and it is safe and excellent in energy saving.
(2) Even when the pump for circulating the antifreeze liquid is stopped, the antifreeze liquid can be prevented from freezing inside the heat source pipe or the like.

Here, various underground heat collecting elements can be used to collect heat from the hole formed in the ground. For example, a pipe filled with a heat medium is arranged in a casing driven to about 10 to 50 m underground. It is possible to use an underground heat exchanger formed by a bore hole, a spiral pipe, or the like. The bore hole can be either a double tube type or a U-shaped tube type.
The pipe in the borehole or the underground heat exchanger and the heat source pipe are connected by a transport pipe covered with a heat insulating material to form a loop pipe. The antifreeze liquid should be kept from filling up inside the borehole and underground heat exchanger pipe, inside the transport pipe, and inside the loop pipe inside the heat source pipe. As a result, if a simple pump is provided in the loop piping, the antifreeze can be easily raised from the borehole to the roof with a small lift.

  An antifreeze such as ethylene glycol, propylene glycol, or aqueous potassium acetate solution is circulated in the heat source pipe as a heat medium.

The invention according to claim 5 of the present invention is the snow melting device according to claim 4, wherein a closed expansion tank is connected to the loop pipe.
With this configuration, in addition to the operation obtained in the fourth aspect, the following operation can be obtained.
(1) Since the expansion tank buffers the volume change caused by the thermal expansion / contraction of the antifreeze liquid filled in the loop pipe, the loop pipe is filled with the antifreeze liquid. Can be raised to the roof.

As described above, according to the snow melting structure and the snow melting apparatus of the roof and the fence of the present invention, the following advantageous effects can be obtained.
According to the invention of claim 1,
(1) If there is a slight temperature difference, a large amount of heat can be transported from the header pipe to the heat pipe branch pipe in a short time, and the temperature difference between the header pipe and the heat pipe branch pipe can be made almost zero. It is possible to provide a snow melting structure of a roof or a kite that hardly causes temperature spots.
(2) The snow that falls on the roof, etc. is immediately melted by the heat of the heat pipe branch pipe and header pipe, divided into blocks, and slides down from the roof in a soft state before being compacted. Therefore, it is possible to provide a snow melting structure of a roof and a kite that is remarkably excellent in snow removal performance that can safely slide down and remove roof snow without hindering walking or running or causing injury. .
(3) Since a plurality of heat pipe branch pipes are branched from the header pipe, the length of the heat source pipe penetrating or attached to the header pipe can be shortened, and the path of the heat source pipe disposed on the roof This shortens the pipe friction resistance and reduces the pipe frictional resistance. Therefore, the pump for sending the heat medium needs only a small output, and the pump can be driven with little energy.
(4) The temperature unevenness of the heat pipe can be further reduced, and a snow melting structure of a roof or a kite with less snow melting spots that can melt the snow facing the roof surface without any spots can be provided.

According to invention of Claim 2, in addition to the effect of Claim 1,
(1) A heat transfer area can be increased, and a snow melting structure of a roof or a kite excellent in heat exchange efficiency can be provided.
(2) It is possible to provide a snow melting structure of a roof or a kite that can be stably installed on a roof face plate, a field road plate, a tile rod, etc. and has excellent workability.

According to invention of Claim 3, in addition to the effect of Claim 1 or 2,
(1) It is possible to reliably transfer heat from the heat pipe branch pipe and the header pipe to the roof surface, and to provide a snow melting structure of a roof or a fence with few snow melting spots.
(2) The side surface of the heat dispersion member and the side wall of the heat pipe branch pipe or the header pipe can be brought into contact with each other to increase the heat radiation area, thereby reducing the temperature spot on the roof surface and reducing the snow melting spot on the roof or roof. The snow melting structure can be provided.
(3) Since the heat pipe and the heat dissipating member can be handled like a planar panel and the roof surface can be supported by the entire surface of the heat pipe and the heat dissipating member, the roof surface is deformed or perforated by the weight of snow. Can be easily opened, and a snow melting structure of a roof and a kite excellent in durability can be provided.

According to invention of Claim 4,
(1) It is possible to provide a snow melting device that is safe and excellent in energy saving without requiring special energy for heating the heat medium.
(2) Even if an unexpected situation occurs in which the pump that circulates antifreeze liquid stops, it can be prevented that the antifreeze liquid freezes inside the heat source pipe, etc., and if the antifreeze liquid is recirculated, snow melting will resume immediately. It is possible to provide a snow melting device with excellent maintainability.

According to invention of Claim 5, in addition to the effect of Claim 4,
(1) Since the expansion tank buffers the volume change caused by the thermal expansion / contraction of the antifreeze liquid filled in the loop pipe, the loop pipe is filled with the antifreeze liquid. It is possible to provide a snow melting device that can raise the roof to the roof.

The partially broken perspective view which shows the snow melting structure which installed the snow melting apparatus in Embodiment 1 in the roof of a house Plan view of heat pipe of snow melting device in embodiment 1 Sectional drawing of the principal part of the snow melting structure of the roof which cut | disconnected the roof which installed the snow melting apparatus in Embodiment 1 in the orthogonal | vertical direction 3 is a cross-sectional end view of the main part taken along line AA in FIG. (A) Schematic perspective view of heat dispersion member of modification example (b) Main part sectional view of heat dispersion member of modification example Plan view of heat pipe of snow melting device in embodiment 2 Plan view of heat pipe of snow melting device in embodiment 3 The model perspective view which shows the state except the roof material of the snow melting structure which installed the heat pipe of the snow melting apparatus in Embodiment 4 in the roof of a house

DESCRIPTION OF SYMBOLS 1 Snow melting apparatus 2, 2a, 2c, 2d Heat pipe 3, 3a, 3b Header pipe 4 Heat pipe branch pipe 5 Heat source pipe 6 Connection pipe 7 Joint 8 Connection pipe 10 Bore hole 11 Casing 12 Pipe 13 Transport pipe 14 Pump 15 Branch pipe 16 Expansion tank 20, 20a House 21 Roof 22 Rafter 23 Field plate 24 Hiroko Mai 26 Base material 27 Nasal cover 28, 28a Heat distribution member 28b Heat insulation material 29 Roof material

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 is a partially broken perspective view showing a snow melting structure of a roof in which the snow melting device in the first embodiment is installed on the roof of a house, and FIG. 2 is a plan view of a heat pipe of the snow melting device in the first embodiment. FIG. 3 is a cross-sectional view of the main part of the snow melting structure of the roof obtained by vertically cutting the roof on which the snow melting device according to the first embodiment is installed, and FIG. 4 is a cross-sectional end view of the main part taken along line AA in FIG. FIG. 5A is a schematic perspective view of a modified example of the heat dispersion member, and FIG. 5B is a cross-sectional view of a main part of the heat dispersion member of the modification.
In FIG. 1, reference numeral 1 denotes a snow melting device in the first embodiment installed on a gable roof 21 of a house 20, and 2 denotes a heat pipe of the snow melting device 1 arranged in parallel on the entire surface of the roof 21 having a slope, 5 Is a heat source pipe to be described later, 6 is a connection pipe to be described later for connecting the heat source pipes 5 and 5, 7 is a joint connected to the heat source pipes 5 and 5 of the heat pipes 2 and 2, and 8 is connected to the joint 7. The connecting pipes connect the heat source pipes 5 and 5 of the heat pipes 2 and 2 arranged side by side.
10 is a borehole of an underground heat collecting element formed in the ground, 11 is a casing driven to a depth of about 10 to 50 m underground, 12 is a double pipe or a U-shaped pipe disposed in the casing, etc. A pipe 13 is covered with a heat insulating material (not shown), connects the pipe 12 and the heat source pipes 5 and 5 to form a loop pipe, 14 is a pump disposed in the transport pipe 13 forming the loop pipe, 15 A branch pipe 16 branched from the transport pipe 13 is a sealed expansion tank whose lower part is connected to the branch pipe 15 and a heat medium is accommodated on the branch pipe 15 side by a diaphragm or the like (not shown). In the heat source pipe 5, the connecting pipe 6, the connecting pipe 8, the pipe 12 in the bore hole 10, the transport pipe 13, and the pump 14, an antifreeze heat medium (antifreeze liquid) such as ethylene glycol, propylene glycol, potassium acetate aqueous solution or the like is present. The heat source pipe 5, the connecting pipe 6, the connecting pipe 8, the pipe 12, the transport pipe 13, and the volume change caused by the expansion / contraction of the heat medium filled in the pump 14 are expanded. Buffer with the heat medium in the tank 16.

In FIG. 2, 2 is a heat pipe in which antifreezing working fluid that does not freeze until around -30 ° C. is enclosed, 3 and 3 are two header pipes arranged substantially in parallel, and 4 are both ends. Are a plurality of heat pipe branch pipes communicating with each of the two header pipes 3 and 3 and arranged substantially in parallel. In the present embodiment, the sections perpendicular to the longitudinal direction of the header pipe 3 and the heat pipe branch pipe 4 are formed in the same rectangular shape.
Reference numeral 5 denotes a heat source pipe penetrating along the longitudinal direction of the header pipe 3, and both end portions of the header pipe 3 are sealed with outer peripheral walls at both ends of the heat source pipe 5. Reference numeral 6 denotes a connecting pipe for connecting the end portions of the heat source pipes 5 and 5.
In the present embodiment, the heat pipe 2 is arranged such that the header pipe 3 is arranged along the gradient direction of the roof 21 and the heat pipe branch pipe 4 is substantially orthogonal to the gradient direction of the roof 21. In addition, the heat pipe branch pipe 4 can be arrange | positioned so that the angle with respect to the gradient direction of the roof 21 may be in the range of 60-90 degrees, preferably 70-90 degrees. As a result, the snowmelt water melted by the heat of the heat pipe branch pipe 4 flows in a plane on the roof material 29, so that only the snow around the heat pipe branch pipe 4 melts and penetrates to the eaves as in the past. A snow cave is formed, and the snow around the snow cave can be prevented from remaining on the roof and being hardened to prevent snow removal.
Further, the heat medium heated in the bore hole 10 is introduced from the eaves side of the heat source pipe 5 of the heat pipe 2 installed on the roof 21 through the transport pipe 13, and passes through the roof 21 through the upstream connection pipe 6. The heat source pipe 5 descends from the ridge side of the opposing heat source pipe 5, enters the ridge side of the heat source pipe 5 of the adjacent heat pipe 2 through the joint 7 and the connecting pipe 8, rises up the roof 21, and opposes through the connection pipe 6. 5, descends from the ridge side, passes through the transport pipe 13 and is returned to the borehole 10.

3 and 4, 22 is a rafter of the roof 21, 23 is a field board disposed on the rafter 22, 24 is a large and small dance attached to the rafter 22 at the eaves, 26 is plywood, made of aluminum The base material on which the heat pipe 2 is placed on the upper surface of the field plate 23 formed in a plate shape, etc. 27 is a nasal cover disposed on the end face of the eaves of the rafters 22 and Hiroko Mai 24, 28 The heat pipe branch pipes 4, 4 and the header pipes 3, 3 are formed in a heat conductive plate shape made of aluminum or the like so that the upper surfaces thereof are flush with or slightly lower than the upper surfaces of the heat pipe branch pipe 4 and the header pipe 3. The heat dissipating member is inserted between the heat pipe branch pipes 4, 4 and the header pipes 3, 3 to transmit heat, 29 is made of steel, clad steel, alloy steel such as stainless steel, molten aluminum / zinc composite Formed with gold-plated steel sheet (galvalume steel sheet), painted plate material, etc. , The heat pipe 2 from the ridge of the roof 21, a roofing material laid on the upper surface of the heat spreader 28.
In FIG. 5, 28a is a heat dispersion member of a modified example made of a metal such as aluminum and having a thin-walled one side opening, and 28b is an inorganic fiber system such as glass wool or rock wool, urethane foam, expanded polystyrene, etc. This is a heat insulating material formed of fiber such as synthetic resin or wood fiber and fitted in the opening of the heat dispersion member 28a. The heat dispersion member 28a can be arranged in place of the heat dispersion member 28 with the opening in which the heat insulating material 28b is fitted on the base material 26 side and the flat surface on the roof material 29 side. Since the heat dissipating member 28a of the modified example is formed in a thin box shape, it can be reduced in weight, and since the heat insulating material 28b is fitted in the opening, heat radiation to the base material 26 side is reduced. Can reduce heat loss.

About the snow melting structure and the snow melting apparatus in Embodiment 1 of this invention comprised as mentioned above, the usage method is demonstrated below.
The heat medium in the pipe 12 of the bore hole 10 is heated to about 13 ° C. by underground heat of about 15 to 17 ° C. The heating medium (antifreeze) in the heated pipe 12 is driven by the pump 14 disposed in the transport pipe 13, and the building side of the heat source pipe 5 of the heat pipe 2 installed on the roof 21 from the transport pipe 13. To introduce. The heat medium is introduced from the eaves side of the heat source pipe 5, descends the roof 21 from the ridge side of the opposing heat source pipe 5 through the up connecting pipe 6, passes through the joint 7, the connecting pipe 8, and the heat source of the adjacent heat pipe 2. Enters from the ridge side of the pipe 5, goes up the roof 21, goes down from the ridge side of the opposing heat source pipe 5 through the connection pipe 6, returns to the pipe 12 of the borehole 10 through the transport pipe 13, and circulates in the loop pipe To do. Since the condensed working fluid in the heat pipe 2 easily flows down to the eave side of the header pipe 3 due to gravity, first, the heat held by the heat medium is increased by heating the eave side of one header pipe 3 with the heat medium. The working fluid in the header pipe 3 evaporates toward the heat pipe branch pipe 4 and the other header pipe 3. The working fluid vapor diffuses and condenses in the heat pipe branch pipe 4 to release condensation heat, and dissipates heat to the heat distribution member 28 and the roof material 29 through the wall of the heat pipe branch pipe 4. The heat medium that has flowed through the heat source pipe 5 of one header pipe 3 then enters the heat source pipe 5 of the other header pipe 3 from the ridge side, and evaporates the working fluid in the other header pipe 3. This operation is repeated, and the working fluid condensed by heat exchange is returned to the header pipe 3, and the roof material 29 dissipates heat to the snow accumulated on the surface and melts the snow. In snow melting, first, the snow accumulated on the roof material 29 on the heat pipe branch pipe 4 and the header pipe 3 having a high temperature is melted, and the snow melting water flows on the surface of the roof material 29 along the roof gradient. The lower surface of the snow piled on the roof material 29 in the range surrounded by the branch pipes 4 and 4 and the header pipes 3 and 3 is melted by the snow melting water. Since the roof snow on the heat pipe branch pipe 4 and the header pipe 3 melts quickly, the roof snow is divided into a plurality of rectangular blocks cut out by the heat pipe branch pipes 4, 4 and the header pipes 3, 3. Is done. And the tensile force which supported the roof snow against gravity against the upper part is cut and each block becomes free, and each slides out and slides down, so the roof snow can be removed.

As described above, since the snow melting structure of the roof according to Embodiment 1 of the present invention is configured, the following operation is obtained.
(1) Both ends of the heat pipe branch pipe 4 communicate with each of the two header pipes 3 and 3 arranged substantially in parallel, and the heat medium is transferred from the heat source pipe 5 of one header pipe 3 to the other. Since the working fluid in both header pipes 3 is evaporated to flow through the heat source pipe 5 of the header pipe 3, the heat generated by the transfer of latent heat accompanying the evaporation of the working fluid in the header pipe and the condensation in the heat pipe branch pipe Since the discharge is performed in each of the two header pipes 3 and 3, the temperature spots of the heat pipe 2 can be reduced, and the snow facing the roof material 29 can be melted without spots.
(2) The snow that has fallen on the roof material 29 is immediately melted by the heat of the heat pipe branch pipe 4 and the header pipe 3 and divided into blocks, and from the roof 21 in a soft state before being compacted. Since it slides down, the roof snow can be safely slid down and removed without causing injuries to pedestrians who have hindered human walking or vehicle travel, and the snow removal performance is remarkably excellent.
(3) Since the header pipe 3 and the heat pipe branch pipe 4 have a rectangular cross section, the four outer peripheral surfaces of the header pipe 3 and the heat pipe branch pipe 4 can be flattened. The heat transfer area can be increased. Further, the heat dispersion member 28 made of aluminum or the like is fitted between the heat pipe branch pipes 4 so that the side surfaces of the heat dispersion member 28 and the side walls of the heat pipe branch pipe 4 and the header pipe 3 are brought into surface contact. The contact area can be increased and the heat exchange efficiency can be increased. Further, since the bottom surfaces of the header pipe 3 and the heat pipe branch pipe 4 are formed flat, the header pipe 3 and the heat pipe branch pipe 4 can be stably installed on the base material 26 and have excellent workability.
(4) A heat dispersive member disposed between the heat pipe branch pipes 4 and 4 and the header pipes 3 and 3 and having an upper surface flush with or slightly lower than the upper surfaces of the heat pipe branch pipes 4 and the header pipes 3 28 is provided, heat can be reliably transferred from the heat pipe branch pipe 4 and the header pipe 3 to the roof material 29.
(5) The side surface of the heat dispersion member 28 and the side wall of the heat pipe branch pipe 4 or the header pipe 3 are brought into contact with each other to transmit heat of the heat pipe branch pipe 4 or the header pipe 3 to the heat dispersion member 28 to widen the heat radiation area. The temperature spots of the roof material 29 can be reduced.
(6) Since the upper surfaces of the heat pipe branch pipe 4 and the header pipe 3 and the upper surface of the heat dissipating member 28 are substantially flush, the roof material 29 can be supported by the entire surface of the heat pipe 2 and the heat dispersing member 28. The roof material 29 can be prevented from being deformed by the weight of snow. In addition, the weight of the snow accumulated on the roofing material 29 causes the roofing material 29 to come into close contact with the heat pipe branch pipe 4, the header pipe 3, and the heat dispersion member 28, improving heat transfer and reliably melting the snow. be able to.
(7) Since the front end of the eaves of the roof material 29 is warmed by the heat pipe branch pipe 4 and the header pipe 3, it is possible to prevent the formation of ice pillars.

Moreover, according to the snow melting apparatus in Embodiment 1 of this invention, the following effects are acquired.
(1) Since both end portions of the heat pipe branch pipe 4 communicate with each of the two header pipes 3 and 3 arranged substantially in parallel, evaporation of the working fluid in the header pipe and the heat pipe branch pipe Heat is released by the transfer of latent heat accompanying the condensation of each of the two header pipes 3 and 3, so that the temperature spots of the heat pipe 2 can be reduced and snow can be melted on the installation surface without spots.
(2) Since the heat medium is heated in the borehole 10 using geothermal heat and this heat medium is circulated, the heat pipe 2 and the roofing material 29 can be heated to about 2 ° C. and used for melting snow, It does not require special energy for heating the medium and is safe and excellent in energy saving.
(3) Since the heat source pipe 5, the connecting pipe 6, the pipe 12, the transport pipe 13 and the pump 14 in the bore hole 10 are filled so that the antifreeze heat medium is not interrupted, the simple pump 14 With a small driving force, the heat medium in the loop pipe can be raised from the borehole 10 to the roof 21 and is excellent in energy saving.
(4) Since the expansion tank 16 is connected to the branch pipe 15 branched from the transport pipe 13, the heat source pipe 5, the connection pipe 6, the connecting pipe 8, the pipe 12, the transport pipe 13, and the pump 14 are filled. The volume change accompanying expansion / contraction of the heat medium is buffered by the heat medium in the expansion tank 16, and the heat medium is interrupted in the heat source pipe 5, connection pipe 6, connection pipe 8, pipe 12, transport pipe 13, and pump 14. It can be filled so that nothing happens.

Here, although the case where the heat pipe 2 is installed on the newly installed roof 21 has been described in the present embodiment, the heat pipe 2 may be installed on a roof such as an existing steel sheet roof. In this case, the base material 26 can be disposed on the surface of a roof material such as a steel plate, and the heat pipe 2 can be installed in the same manner as in the present embodiment. In addition, when a tile is formed along the roof gradient direction, a spacer having a height substantially the same as the height of the tile is placed on or between the tiles, and between the spacers. The base material 26 is installed, and the heat pipe 2 is installed as in the present embodiment. In some cases, the base material 26 is installed directly on the roof bar, and the heat pipe 2 is installed thereon.
Moreover, although the case where the heat dispersion member 28 is separately installed on the base material 26 has been described, the base material 26 and the heat dispersion member 28 are integrally formed of metal such as aluminum or concrete, and are integrally formed. In some cases, the header pipe 3 and the heat pipe branch pipe 4 of the heat pipe 2 are fitted into the hollow. Thereby, the effect | action that workability can be improved is acquired.
In addition, the amount of roof snow to be melted on the roof 21 can be increased by providing protrusions or the like on the roof surface of the roof 21 that prevent the melted roof snow from sliding down.
In addition, it is possible to heat the antifreeze flowing through the loop pipe by using the remaining heat of the bath or the waste heat from the factory or household. In this case, a jacket is provided in the transport pipe 13 on the downstream side of the pump 14, and the waste water is introduced into the jacket, and heat is exchanged between the waste water in the jacket and the antifreeze liquid through the pipe wall of the transport pipe 13. Heat the antifreeze with heat. As a result, the temperature of the antifreeze liquid can be temporarily raised, and the roof snow can be melted by exhaust heat, so that the exhaust heat can be effectively used.

(Embodiment 2)
FIG. 6 is a plan view of a heat pipe of the snow melting device in the second embodiment. In addition, the same thing as Embodiment 1 attaches | subjects the same code | symbol, and abbreviate | omits description.
In the figure, 2a is a heat pipe of the snow melting device in the second embodiment, 4a is a plurality of heat pipe branch pipes, one end of which is connected to the header pipe 3 and arranged substantially in parallel, and 5a is attached in the longitudinal direction of the header pipe 3. It is a heat source pipe that is provided and formed to have substantially the same thickness as the header pipe 3.
In the heat pipe 2a of the snow melting apparatus in the second embodiment configured as described above, the header pipe 3 is disposed along the gradient direction of the roof 21, and the heat pipe branch pipe 4a is substantially orthogonal to the gradient direction of the roof 21. It arrange | positions like this and it constructs similarly to Embodiment 1.

As described above, since the heat pipe of the snow melting device in the second embodiment of the present invention is configured, the following operation is obtained in addition to the operation described in the first embodiment.
(1) Since one end of the heat pipe branch pipe 4a communicates with one header pipe 3 and can be made compact, when the roof 21 is small, the circulation path of the heat medium can be simplified and the workability is improved. be able to.
(2) Since the heat source pipe 5a formed to have substantially the same thickness as the header pipe 3 is provided, it is possible to directly exchange heat between the heat medium and the roof material 29 through the pipe wall of the heat source pipe 5a, and the snow melting efficiency Can be increased.

(Embodiment 3)
FIG. 7 is a plan view of a heat pipe of the snow melting device in the third embodiment. In addition, the same thing as Embodiment 1 attaches | subjects the same code | symbol, and abbreviate | omits description.
In the figure, 2b is a heat pipe of the snow melting device in the third embodiment, 4b is a plurality of heat pipe branch pipes having one end communicating with the header pipe 3 and arranged substantially in parallel, and 4c is the other end of the heat pipe branch pipe 4b. It is a pressure equalizing pipe communicating with the.
In the heat pipe 2b of the snow melting apparatus in the third embodiment configured as described above, the header pipe 3 is arranged along the gradient direction of the roof 21 and the heat pipe branch pipe 4b is substantially orthogonal to the gradient direction of the roof 21. It arrange | positions like this and it constructs similarly to Embodiment 1.

As described above, since the heat pipe of the snow melting device in the third embodiment of the present invention is configured, the following operation is obtained in addition to the operation described in the first embodiment.
(1) Since one end of the heat pipe branch pipe 4b communicates with one header pipe 3 and can be made compact, the circulation path of the heat medium can be simplified and the workability can be improved when the roof 21 is small. be able to.
(2) Since the pressure equalizing pipe 4c communicates with the other end of the heat pipe branch pipe 4b, the pressure in the heat pipe branch pipe 4b can be made uniform, and temperature spots can be reduced.

(Embodiment 4)
FIG. 8 is a schematic perspective view showing a state in which a snow melting structure roof material in which the heat pipe of the snow melting device in the fourth embodiment is installed on the roof of a house is removed. In addition, the thing similar to what was demonstrated in Embodiment 1 attaches | subjects the same code | symbol, and abbreviate | omits description.
In the figure, 2c is the heat pipe of the snow melting device in the fourth embodiment, which is arranged on the roof of the close-up type house 20a, and 3a, 3a are both narrowed inward toward the ridge side and the interval is temporarily narrowed. Header pipe.
2d is a heat pipe of the snow melting device of the modified example in Embodiment 4 arranged on the roof of the house 20a, and 3b and 3b are header pipes in which one side is narrowed to the inside for a while and the interval is narrowed for a while. is there. The header pipes 3a and 3a of the heat pipe 2a and the header pipes 3b and 3b of the heat pipe 2b are connected to a plurality of heat pipe branch pipes 4 arranged substantially in parallel at both ends. Is substantially orthogonal to the slope direction of the roof, and is arranged so as to intersect with the slope direction of the roof 21 at an angle of 60 to 90 °, preferably 70 to 90 °.
As described above, since the heat pipe of the snow melting device in the fourth embodiment is configured, it can be arranged freely on the entire surface of the roof according to the shape of the roof, and the snow on the entire surface of the roof is melted and removed. can do.

  In addition, although the snow melting structure of the roof was demonstrated in Embodiment 1 thru | or 4, similarly, the snow melting structure of a fence is provided by installing the snow melting apparatus demonstrated in Embodiment 1 thru | or 4 also in fences, such as a persimmon. can do.

TECHNICAL FIELD The present invention relates to a snow melting structure and a snow melting device for a roof and a fence that melt and remove snow accumulated on a fence such as a roof and a persimmon and relates to a snow melting device that melts in a soft state before being compacted. Providing a snow melting structure for roofs and reeds that can slide down and can remove snow on the entire surface safely without hindering walking or running or causing injuries, etc. In addition, it is possible to provide a snow melting device that is small in temperature spots, can remove snow on the installation surface without spots, and has excellent energy saving and low running cost.

Claims (6)

It is a snow melting structure of roofs and fences with heat pipes arranged on the roofs and fences,
The heat pipe has a header pipe in which a heat source pipe is attached or penetrated, and a plurality of substantially parallel heat pipe branch pipes branched from the header pipe, and the heat pipe branch pipe The snow melting structure of the roof or fence is arranged substantially perpendicular to the slope direction of the roof or fence.   2. The snow melting structure for roofs and reeds according to claim 1, wherein both end portions of each of the heat pipe branch pipes communicate with each of the two header pipes arranged at intervals. .   A cross section perpendicular to the longitudinal direction of the header pipe and the heat pipe branch pipe is formed in any one of a substantially rectangular shape, a substantially rectangular shape, a substantially triangular shape, a substantially oval shape, and a substantially semicircular shape, and the upper surface is flat. 3. The snow melting structure for roofs and fences according to claim 1 or 2, wherein the snow melting structure is wide.   The upper surface of the heat pipe branch pipe and the header pipe is formed to be flush with or slightly lower than the upper surface of the heat pipe branch pipe and includes a heat dispersion member disposed between the heat pipe branch pipes. The snow melting structure of a roof or a kite according to any one of 1 to 3.   5. A snow melting device used in a snow melting structure of a roof or a fence according to claim 1, wherein the antifreeze is collected from the heat pipe and a hole formed in the ground connected to the heat source pipe. A snow melting device comprising: a loop pipe for circulating the snow.   The snow melting device according to claim 5, wherein a sealed expansion tank is connected to the loop pipe.

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